Taylor Swift looked absolutely breathtaking at the Billboard Awards in her sweeping red gown with see-through bodice work. Her hair was done straight and Swift rocked dark eye makeup to complement her edgy yet classy floor-length dress. Purple-haired Katy Perry also looked gorgeous, donning a glittery iridescent pink mermaid-style dress with a chiffon bottom. Meanwhile, Zooey Deschanel also went for a beaded vintage number that gave the She & Him songstress a sweet yet sexy mod appearance.

Wiz Khalifa looked dapper at the 2012 Billboard Music Awards in black and white, and we were really digging his button-adorned vest, fedora and red kicks. Alicia Keys stunned in all-black, while Jordin Sparks dazzled in nude lace. Julianne Hough also looked beautiful in a short sparkly dress, while the Wanted looked super handsome in their sleek suits.

Do you agree with our picks for the best dressed stars at the 2012 Billboard Music Awards? Scroll through the pictures and leave a comment below.